How do we fix the sample concentaryion in hplc method
development. what is the basis?Thanks in advance

Answer Posted / vipul

For Assay:- Sample concentration should be lower than higher
detector linearity concentration.
For Related substances:- Sample concentration should be
decided on the basis of LOD and LOQ determination
e.g sample concentration 1000ppm
Standard low load concentration 5ppm(For specified imp
limit-0.5%)
LOQ-should be between 0.05% To 0.09% of sample concentration.

Is This Answer Correct ?    8 Yes 2 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What is the principle of HPLC, GC, LCMS, GCMS,LC QQQ, GC QQQ, LC Q TOF and GC Q TOF. What are the applications and Specificity?

8310


I have compare C2H2-air and C2H2-N2O flame AAS on determination calcium. Both use same range of std to plot calibration curve. (2-6ppm) When i measure the sample with phosphate, KCl and LaCl, C2H2-N2O flame give false positive result, around 0.5ppm. When i measure the sample with phosphste, KCl and EDTA. C2H2-N2O flame also give 0.5ppm false positive. But both above mentioned sample would not give false positive when measured by C2H2-air flame. What is the reason?

2977


please explain about aluminium hydroxide assay

706


1.What is the difference between method validation and method verification 2.Which guidelines proposed to method transfer

1304


for which product require to do content uniformity? what is limit of cu?

315






Did anybody have method for acetyl cysteine effervescnce tablet

1810


How do we quantify crystaline and amarpous forms by using (NMR, XRD)spectroscopic techniques? Which any others instruments are useful for this quantification? explain

1954


Please tell me about the pH of Polycaboxylic ether is it in the 5-6 range ever or more than 6

2111


How can I develope method of dissolution by HPLC OR UV

1893


how you start the solubility study?

345


Why acetonitrile and water are used as extraction solvent when analysis melamine? I thought they are miscible and won't be able to separate...

1223


in hplc chromatogram started from left to right and in uv spectrum started from left to right

471


how require to interprit the method precision data of hptlc?

295


why require the ph, buffer during hplc mobile phase?

407


how to qualify the impurity?

325